图示电感元件的磁链<img src="https://nimg.ppkao.com/2017-12/xieqiushi/201712071517471374.jpg?sign=31b3a98cb7a80ffa7e69d4dd3ccb5928&t=62d0954f" /><br /> =()A<br /> <img src="https://nimg.ppkao.com/2017-12/xieqiushi/20171207151808238.jpg?sign=8d4d933ce1f0882f1f7f679a95087195&t=62d0954f" />
A、A
B、B
C、C
D、D